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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] Updated: (SOLR-2396) deprecated char[] based collation factories / replace with byte[]-based
Date Tue, 01 Mar 2011 16:22:37 GMT

     [ https://issues.apache.org/jira/browse/SOLR-2396?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robert Muir updated SOLR-2396:
------------------------------

    Attachment: SOLR-2396.patch

Updated patch, with unit tests for the CollationField and ICUCollationField.

I think this is close.


> deprecated char[] based collation factories / replace with byte[]-based
> -----------------------------------------------------------------------
>
>                 Key: SOLR-2396
>                 URL: https://issues.apache.org/jira/browse/SOLR-2396
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Robert Muir
>             Fix For: 4.0
>
>         Attachments: SOLR-2396.patch, SOLR-2396.patch, SOLR-2396.patch
>
>
> In LUCENE-2551 collation support was changed to use byte[] keys.
> Previously it encoded sort keys with IndexableBinaryString into char[],
> but this is wasteful with regards to RAM and disk when terms can be byte.
> A simple solution is to create tokenizer factories which are KeywordTokenizer + [ICU]CollationAttributeFactory.
> A better solution would be [ICU]CollationFieldTypes, as this would allow locale-sensitive
> range queries, but I found this to be more difficult due to the fact that the indexed
values
> are byte[] not String...

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